A 37-year-old member asked:
Can two parents with positive blood types have a negative blood type baby?
2 doctor answers • 3 doctors weighed in
Pathology 23 years experience
Yes it could: Someone who is "rh positive" or "rh+" has at least one rh+ allele, but could have two. Their genotype could be either rh+/rh+ or rh+/rh-. Someone who rh- has a genotype of rh-/rh-.
A father who is rh+ could pass either an rh+ or rh- allele to his son or daughter. And the same from rh+ mother if genotype is rh+/rh-.
The children have 25% chance of having rh-.
5.4k viewsReviewed >2 years ago
Anesthesiology 30 years experience
Maybe: Rhesus transmission (+ or -) is not a clear as the ABO transmission. This is purely a result of the genetic expression of each parent, and this may be different when their genes are combined in a new child.
4.9k viewsAnswered >2 years ago
A 22-year-old female asked:
What wil be a baby blood group when both parents are a positive blood group?
1 doctor answer • 2 doctors weighed in
Medical Oncology 50 years experience
A Positive: The baby inherits one from each parent, so it should be a positive.
4.4k viewsAnswered >2 years ago
Last updated Oct 11, 2017
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